diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index fc10620967c7..f98ed648cb58 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -4878,6 +4878,12 @@ static int mem_cgroup_can_attach(struct cgroup_taskset *tset)
 	return ret;
 }
 
+static int mem_cgroup_allow_attach(struct cgroup_subsys_state *css,
+				   struct cgroup_taskset *tset)
+{
+	return subsys_cgroup_allow_attach(css->cgroup, tset);
+}
+
 static void mem_cgroup_cancel_attach(struct cgroup_taskset *tset)
 {
 	if (mc.to)
@@ -5039,6 +5045,11 @@ static int mem_cgroup_can_attach(struct cgroup_taskset *tset)
 {
 	return 0;
 }
+static int mem_cgroup_allow_attach(struct cgroup_subsys_state *css,
+				   struct cgroup_taskset *tset)
+{
+	return 0;
+}
 static void mem_cgroup_cancel_attach(struct cgroup_taskset *tset)
 {
 }
@@ -5222,6 +5233,7 @@ struct cgroup_subsys memory_cgrp_subsys = {
 	.can_attach = mem_cgroup_can_attach,
 	.cancel_attach = mem_cgroup_cancel_attach,
 	.attach = mem_cgroup_move_task,
+	.allow_attach = mem_cgroup_allow_attach,
 	.bind = mem_cgroup_bind,
 	.dfl_cftypes = memory_files,
 	.legacy_cftypes = mem_cgroup_legacy_files,